diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9ec82015..eecc059a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -56,6 +56,6 @@ jobs:
       run: brew install dtc
 
     - name: Download prebuilt user image
-      run: cd user && make sfsimg arch=${{ matrix.arch }} prebuilt=1 && cd ..
+      run: cd user && make sfsimg ARCH=${{ matrix.arch }} PREBUILT=1 && cd ..
     - name: Build kernel
       run: cd kernel && make build ARCH=${{ matrix.arch }} && cd ..
diff --git a/kernel/Cargo.lock b/kernel/Cargo.lock
index f064d17c..88fcc266 100644
--- a/kernel/Cargo.lock
+++ b/kernel/Cargo.lock
@@ -8,7 +8,7 @@ dependencies = [
  "bit_field 0.9.0",
  "bitflags",
  "cast",
- "register 0.2.1",
+ "register",
  "usize_conversions",
  "ux",
 ]
@@ -163,15 +163,6 @@ dependencies = [
  "num-traits",
 ]
 
-[[package]]
-name = "cortex-a"
-version = "3.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c6467294dffa4f14094880a0f5dab0dfc8e163d808c305378669f68c6ff1fda0"
-dependencies = [
- "register 0.5.1",
-]
-
 [[package]]
 name = "device_tree"
 version = "1.0.3"
@@ -600,16 +591,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e10f31b6d2299e5620986ad9fcdd66463e125ad72af4f403f9aedf7592d5ccdb"
 dependencies = [
- "tock-registers 0.2.0",
-]
-
-[[package]]
-name = "register"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "deaba5b0e477d21f61a57504bb5cef4a1e86de30300b457d38971c1cfc98b815"
-dependencies = [
- "tock-registers 0.5.0",
+ "tock-registers",
 ]
 
 [[package]]
@@ -724,18 +706,11 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a385d94f3f62e60445a0adb9ff8d9621faa272234530d4c0f848ec98f88e316"
 
-[[package]]
-name = "tock-registers"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70323afdb8082186c0986da0e10f6e4ed103d681c921c00597e98d9806dac20f"
-
 [[package]]
 name = "trapframe"
-version = "0.4.1"
-source = "git+https://github.com/rcore-os/trapframe-rs?rev=d7fcbed#d7fcbed1eb82e98b058d2796e8b5c0db719c9dd2"
+version = "0.4.2"
+source = "git+https://github.com/rcore-os/trapframe-rs?rev=5c6cc02#5c6cc0280e1fa6557d151b7060f6048b93ba7d18"
 dependencies = [
- "cortex-a",
  "raw-cpuid",
  "x86_64",
 ]
diff --git a/kernel/Cargo.toml b/kernel/Cargo.toml
index 7648afec..228485f0 100644
--- a/kernel/Cargo.toml
+++ b/kernel/Cargo.toml
@@ -74,7 +74,7 @@ rcore-fs-devfs = { git = "https://github.com/rcore-os/rcore-fs", rev = "517af47"
 rlibc = "1.0"
 smoltcp = { git = "https://github.com/rcore-os/smoltcp", rev = "5bd87c7c", default-features = false, features = ["alloc", "log", "ethernet", "proto-ipv4", "proto-igmp", "socket-icmp", "socket-udp", "socket-tcp", "socket-raw"] }
 spin = "0.5"
-trapframe = { git = "https://github.com/rcore-os/trapframe-rs", rev = "d7fcbed" }
+trapframe = { git = "https://github.com/rcore-os/trapframe-rs", rev = "5c6cc02" }
 virtio-drivers = { git = "https://github.com/rcore-os/virtio-drivers", rev = "dfa70e14" }
 volatile = "0.2"
 woke = "0.0.2"
diff --git a/user b/user
index a6a4eb92..93dc937e 160000
--- a/user
+++ b/user
@@ -1 +1 @@
-Subproject commit a6a4eb92a531041ba58382f66cdf311cac429df1
+Subproject commit 93dc937e96b6bdc1358b6e80ef53b91a21a6b8cb